@misc{indiciae22a5321bec3b,
  title = {Earth Satellite Population Instability: Underscoring the Need for Debris Mitigation},
  author = {Liou, Jer-chyi and Johnson, N. L.},
  year = {2006},
  url = {https://ntrs.nasa.gov/citations/20080029282},
  note = {Source identifier: 20080029282}
}